The article is thorough and covers why your [2], under tweening, is insufficient. Video beyond stereotyped repetitive movements is likely AI-complete. Presumab

The article is thorough and covers why your [2], under tweening, is insufficient. Video beyond stereotyped repetitive movements is likely AI-complete. Presumably you'd want to be director and be able to control camera angles. You might want to have a cartoon or 3D render visual style. Unreal engine prompt tag even more literal. Most important, you will want actors. Anything alive will have to move convincingly and intentionally. Some might even bring up the ethics of allowing the movie to end. Before proper video, I think we'll first have to see tools for music, 3D rendering and animation that bring down difficulty by orders of magnitude.